The soul that sins shall bear his iniquity. How does a man bear his iniquity? The answer is quite simple: by suffering the consequences of those sins.
Far too many people have forsaken the simplicity which is in Christ and have instead pursued the complexity and labour of religion (2 Corinthians 11:3).
Paul was one of the most religious people ever to live. In spite of his religious efforts, he was condemned to hell until he trusted Christ as Saviour.
How would making your motive match the Lord's motive change how you approach the Christian life (from witnessing to praying to Bible reading and so on)?
